Add 18/7 and 36/90, Solve 2 4/7 + 36/90 as a fraction

Add 18/7 and 36/90

1^st number: 2 4/7, 2^nd number: 36/90

18/7 + 36/90 is 104/35.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 7 × 90 = 630,
18/7 = 18 × 90/7 × 90 = 1620/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
36/90 = 36 × 7/90 × 7 = 252/630
Add the two like fractions:
1620/630 + 252/630 = 1620 + 252/630 = 1872/630
1872/630 simplified gives 104/35
So, 18/7 + 36/90 = 104/35
In mixed form: 234/35

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad